Scimago Journal & Country Rank

International Journal of Hydrogen Energy


United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category


Elsevier Ltd.



Publication type








How to publish in this journal



The International Journal of Hydrogen Energy aims to provide a central vehicle for the exchange and dissemination of new ideas, technology developments and research results in the field of Hydrogen Energy between scientists and engineers throughout the world. The emphasis is placed on original research, both analytical and experimental, covering all aspects of Hydrogen Energy, including production, storage, transmission, utilization, enabling technologies, environmental impact, economic and international aspects of hydrogen and hydrogen carriers such as NH3, CH4, alcohols, etc. The utilization includes thermochemical (combustion), photochemical, electrochemical (fuel cells) and nuclear conversion of hydrogen, hydrogen isotopes and/or hydrogen carriers to thermal, mechanical and electrical energies, and their applications in transportation (including aerospace), industrial, commercial and residential sectors. When outstanding new advances are made, or when new areas have been developed to a definitive stage, special review articles will be considered. Shorter communications are also welcome. Join the conversation about this journal

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

Condensed Matter Physics1999Q3
Condensed Matter Physics2000Q3
Condensed Matter Physics2001Q3
Condensed Matter Physics2002Q2
Condensed Matter Physics2003Q2
Condensed Matter Physics2004Q1
Condensed Matter Physics2005Q1
Condensed Matter Physics2006Q1
Condensed Matter Physics2007Q1
Condensed Matter Physics2008Q1
Condensed Matter Physics2009Q1
Condensed Matter Physics2010Q1
Condensed Matter Physics2011Q1
Condensed Matter Physics2012Q1
Condensed Matter Physics2013Q1
Condensed Matter Physics2014Q1
Condensed Matter Physics2015Q1
Condensed Matter Physics2016Q1
Condensed Matter Physics2017Q1
Condensed Matter Physics2018Q1
Condensed Matter Physics2019Q1
Condensed Matter Physics2020Q1
Condensed Matter Physics2021Q1
Energy Engineering and Power Technology1999Q1
Energy Engineering and Power Technology2000Q1
Energy Engineering and Power Technology2001Q1
Energy Engineering and Power Technology2002Q1
Energy Engineering and Power Technology2003Q1
Energy Engineering and Power Technology2004Q1
Energy Engineering and Power Technology2005Q1
Energy Engineering and Power Technology2006Q1
Energy Engineering and Power Technology2007Q1
Energy Engineering and Power Technology2008Q1
Energy Engineering and Power Technology2009Q1
Energy Engineering and Power Technology2010Q1
Energy Engineering and Power Technology2011Q1
Energy Engineering and Power Technology2012Q1
Energy Engineering and Power Technology2013Q1
Energy Engineering and Power Technology2014Q1
Energy Engineering and Power Technology2015Q1
Energy Engineering and Power Technology2016Q1
Energy Engineering and Power Technology2017Q1
Energy Engineering and Power Technology2018Q1
Energy Engineering and Power Technology2019Q1
Energy Engineering and Power Technology2020Q1
Energy Engineering and Power Technology2021Q1
Fuel Technology1999Q1
Fuel Technology2000Q1
Fuel Technology2001Q1
Fuel Technology2002Q1
Fuel Technology2003Q1
Fuel Technology2004Q1
Fuel Technology2005Q1
Fuel Technology2006Q1
Fuel Technology2007Q1
Fuel Technology2008Q1
Fuel Technology2009Q1
Fuel Technology2010Q1
Fuel Technology2011Q1
Fuel Technology2012Q1
Fuel Technology2013Q1
Fuel Technology2014Q1
Fuel Technology2015Q1
Fuel Technology2016Q1
Fuel Technology2017Q1
Fuel Technology2018Q1
Fuel Technology2019Q1
Fuel Technology2020Q1
Fuel Technology2021Q1
Renewable Energy, Sustainability and the Environment1999Q2
Renewable Energy, Sustainability and the Environment2000Q2
Renewable Energy, Sustainability and the Environment2001Q2
Renewable Energy, Sustainability and the Environment2002Q1
Renewable Energy, Sustainability and the Environment2003Q1
Renewable Energy, Sustainability and the Environment2004Q1
Renewable Energy, Sustainability and the Environment2005Q1
Renewable Energy, Sustainability and the Environment2006Q1
Renewable Energy, Sustainability and the Environment2007Q1
Renewable Energy, Sustainability and the Environment2008Q1
Renewable Energy, Sustainability and the Environment2009Q1
Renewable Energy, Sustainability and the Environment2010Q1
Renewable Energy, Sustainability and the Environment2011Q1
Renewable Energy, Sustainability and the Environment2012Q1
Renewable Energy, Sustainability and the Environment2013Q1
Renewable Energy, Sustainability and the Environment2014Q1
Renewable Energy, Sustainability and the Environment2015Q1
Renewable Energy, Sustainability and the Environment2016Q1
Renewable Energy, Sustainability and the Environment2017Q2
Renewable Energy, Sustainability and the Environment2018Q2
Renewable Energy, Sustainability and the Environment2019Q2
Renewable Energy, Sustainability and the Environment2020Q1
Renewable Energy, Sustainability and the Environment2021Q1

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19990.529
Cites / Doc. (4 years)20000.651
Cites / Doc. (4 years)20010.916
Cites / Doc. (4 years)20021.336
Cites / Doc. (4 years)20031.403
Cites / Doc. (4 years)20042.200
Cites / Doc. (4 years)20052.633
Cites / Doc. (4 years)20063.490
Cites / Doc. (4 years)20073.578
Cites / Doc. (4 years)20084.513
Cites / Doc. (4 years)20094.792
Cites / Doc. (4 years)20105.024
Cites / Doc. (4 years)20114.993
Cites / Doc. (4 years)20124.552
Cites / Doc. (4 years)20133.987
Cites / Doc. (4 years)20143.991
Cites / Doc. (4 years)20153.790
Cites / Doc. (4 years)20164.016
Cites / Doc. (4 years)20174.442
Cites / Doc. (4 years)20184.242
Cites / Doc. (4 years)20194.923
Cites / Doc. (4 years)20205.329
Cites / Doc. (4 years)20216.269
Cites / Doc. (3 years)19990.529
Cites / Doc. (3 years)20000.673
Cites / Doc. (3 years)20011.051
Cites / Doc. (3 years)20021.405
Cites / Doc. (3 years)20031.510
Cites / Doc. (3 years)20042.272
Cites / Doc. (3 years)20052.600
Cites / Doc. (3 years)20063.356
Cites / Doc. (3 years)20073.561
Cites / Doc. (3 years)20084.211
Cites / Doc. (3 years)20094.608
Cites / Doc. (3 years)20104.937
Cites / Doc. (3 years)20114.828
Cites / Doc. (3 years)20124.381
Cites / Doc. (3 years)20133.738
Cites / Doc. (3 years)20143.816
Cites / Doc. (3 years)20153.742
Cites / Doc. (3 years)20163.995
Cites / Doc. (3 years)20174.412
Cites / Doc. (3 years)20184.312
Cites / Doc. (3 years)20195.066
Cites / Doc. (3 years)20205.515
Cites / Doc. (3 years)20216.534
Cites / Doc. (2 years)19990.563
Cites / Doc. (2 years)20000.714
Cites / Doc. (2 years)20011.034
Cites / Doc. (2 years)20021.624
Cites / Doc. (2 years)20031.480
Cites / Doc. (2 years)20042.169
Cites / Doc. (2 years)20052.401
Cites / Doc. (2 years)20063.334
Cites / Doc. (2 years)20073.147
Cites / Doc. (2 years)20083.896
Cites / Doc. (2 years)20094.358
Cites / Doc. (2 years)20104.659
Cites / Doc. (2 years)20114.572
Cites / Doc. (2 years)20123.956
Cites / Doc. (2 years)20133.398
Cites / Doc. (2 years)20143.699
Cites / Doc. (2 years)20153.571
Cites / Doc. (2 years)20163.851
Cites / Doc. (2 years)20174.426
Cites / Doc. (2 years)20184.332
Cites / Doc. (2 years)20195.186
Cites / Doc. (2 years)20205.617
Cites / Doc. (2 years)20216.733
Total Cites 

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

Self Cites199951
Self Cites200069
Self Cites2001131
Self Cites2002198
Self Cites2003107
Self Cites2004179
Self Cites2005150
Self Cites2006222
Self Cites2007524
Self Cites20081613
Self Cites20093675
Self Cites20105437
Self Cites20116847
Self Cites20127250
Self Cites20135226
Self Cites20145812
Self Cites20154988
Self Cites20166339
Self Cites20179321
Self Cites20187890
Self Cites201911129
Self Cites202012217
Self Cites202114039
Total Cites1999225
Total Cites2000282
Total Cites2001430
Total Cites2002593
Total Cites2003687
Total Cites20041120
Total Cites20051370
Total Cites20061755
Total Cites20072279
Total Cites20084527
Total Cites20098391
Total Cites201013161
Total Cites201117565
Total Cites201219748
Total Cites201320704
Total Cites201422003
Total Cites201523773
Total Cites201623920
Total Cites201728653
Total Cites201830502
Total Cites201937834
Total Cites202044755
Total Cites202152752
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

External Cites per document19990.412
External Cites per document20000.510
External Cites per document20010.733
External Cites per document20020.947
External Cites per document20031.300
External Cites per document20041.973
External Cites per document20052.416
External Cites per document20063.091
External Cites per document20072.863
External Cites per document20082.770
External Cites per document20092.635
External Cites per document20102.938
External Cites per document20112.984
External Cites per document20122.805
External Cites per document20132.833
External Cites per document20142.847
External Cites per document20152.997
External Cites per document20162.971
External Cites per document20173.009
External Cites per document20183.220
External Cites per document20193.599
External Cites per document20204.043
External Cites per document20214.849
Cites per document19990.529
Cites per document20000.673
Cites per document20011.051
Cites per document20021.405
Cites per document20031.510
Cites per document20042.272
Cites per document20052.600
Cites per document20063.356
Cites per document20073.561
Cites per document20084.211
Cites per document20094.608
Cites per document20104.937
Cites per document20114.828
Cites per document20124.381
Cites per document20133.738
Cites per document20143.816
Cites per document20153.742
Cites per document20163.995
Cites per document20174.412
Cites per document20184.312
Cites per document20195.066
Cites per document20205.515
Cites per document20216.534
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

Non-citable documents19993
Non-citable documents20001
Non-citable documents20011
Non-citable documents20025
Non-citable documents20039
Non-citable documents200416
Non-citable documents200522
Non-citable documents200627
Non-citable documents200727
Non-citable documents200823
Non-citable documents200931
Non-citable documents201037
Non-citable documents201146
Non-citable documents201253
Non-citable documents201376
Non-citable documents201478
Non-citable documents201585
Non-citable documents201670
Non-citable documents201769
Non-citable documents201852
Non-citable documents201948
Non-citable documents202068
Non-citable documents202190
Citable documents1999422
Citable documents2000418
Citable documents2001408
Citable documents2002417
Citable documents2003446
Citable documents2004477
Citable documents2005505
Citable documents2006496
Citable documents2007613
Citable documents20081052
Citable documents20091790
Citable documents20102629
Citable documents20113592
Citable documents20124455
Citable documents20135463
Citable documents20145688
Citable documents20156268
Citable documents20165918
Citable documents20176425
Citable documents20187022
Citable documents20197420
Citable documents20208047
Citable documents20217984
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

Uncited documents1999289
Uncited documents2000247
Uncited documents2001219
Uncited documents2002216
Uncited documents2003216
Uncited documents2004179
Uncited documents2005156
Uncited documents2006137
Uncited documents2007161
Uncited documents2008197
Uncited documents2009221
Uncited documents2010290
Uncited documents2011385
Uncited documents2012515
Uncited documents2013784
Uncited documents2014785
Uncited documents2015852
Uncited documents2016739
Uncited documents2017681
Uncited documents2018844
Uncited documents2019693
Uncited documents2020703
Uncited documents2021535
Cited documents1999136
Cited documents2000172
Cited documents2001190
Cited documents2002206
Cited documents2003239
Cited documents2004314
Cited documents2005371
Cited documents2006386
Cited documents2007479
Cited documents2008878
Cited documents20091600
Cited documents20102376
Cited documents20113253
Cited documents20123993
Cited documents20134755
Cited documents20144981
Cited documents20155501
Cited documents20165249
Cited documents20175813
Cited documents20186230
Cited documents20196775
Cited documents20207412
Cited documents20217539
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